Gemfan 40mm 1609 PC 4-Blade Whoop Propeller (1mm/1.5mm Shaft) (Set of 8 — 4CW+4CCW)

These 40mm 1609 four-blade polycarbonate propellers are built for 75mm-class micro whoops, giving punchy acceleration and tight cornering grip for indoor freestyle and proximity flying. The set covers both common whoop shaft sizes, so you can match them straight to your motor without an adaptor.

Key features

• 40mm (1.6-inch) diameter with a shallow 0.8-inch pitch for controlled, responsive throttle indoors
• Available with a 1mm centre hole (Clear Grey, Clear Red) or a 1.5mm centre hole (Clear Black, Clear Blue, Macho Pink)
• Four-blade layout adds low-end thrust and cornering bite over 2-blade or 3-blade whoop props
• Tough polycarbonate moulding shrugs off repeated indoor wall and floor strikes
• Suits 0802, 1102 and 1103 brushless motors on quads around 30g all-up weight

Specifications

• Diameter: 40mm (1.6 in)
• Pitch: 0.8 in
• Blades: 4
• Material: Polycarbonate (PC)
• Shaft options: 1mm or 1.5mm
• Weight: 0.5 g per prop
• Pack: 8 props (4CW + 4CCW)

Check your motor's shaft diameter before ordering — the 1mm and 1.5mm hubs are not interchangeable, so pick the colour that matches your build.